20080868 Ver 2_I-41 2015 PA2 Ponar Downstream Raw Data Table_20160708

Table 1-41. Numbers of benthic macroinvertebrates collected in each ponar grab sample at the PA2
downstream station in May 2015.
Species/taxon
PA2 Creek Downstream Samples
1
2 3
4
5
Average
Annelida
Hirudinea
Myzobdella lugubris
0
1 0
0
0
0.2
Oligochaeta
Tubificidae sp. w/o hair
1
1 0
0
8
2.0
Polychaeta
Amphicteis f/oridus
9
10 5
9
33
13.2
Eteone heteropoda
0
0 0
1
6
1.4
Heteromastus filiformis
0
0 0
0
1
0.2
Laeonereis culveri
0
4 0
1
7
2.4
Marenzelleria viridis
0
0 0
0
1
0.2
Mediomastus ambiseta
0
0 0
0
3
0.6
Polydora cornuta
0
0 0
1
1
0.4
Streblospio benedecti
1
6 3
6
12
5.6
Arthropoda
Insecta
Diptera
Bezzia/Palmonyia complex
0
7 0
8
2
3.4
Chironomus decorus
11
14 7
11
13
11.2
Dicrotendipes nervosus
1
0 0
1
0
0.4
Goeldichironomus devineyae
0
2 0
1
0
0.6
Parachironomus sp.
0
0 1
0
0
0.2
Tanypus neopunctipennis
9
23 21
19
11
16.6
Tanytarsus sp.
6
45 28
41
32
30.4
Hemiptera
Corixidae sp.
2
0 0
2
0
0.8
Malacostraca
Amphipoda
Apocorophium louisianum
0
0 0
0
11
2.2
Apocorophium sp.
8
3 3
2
32
9.6
Gammarus tigrinus
15
27 7
10
100
31.8
Isopoda
Edotia montosa
0
0 0
0
1
0.2
Ostracoda
Cyprideis littoralis
0
0 0
1
1
0.4
Mollusca
Bivalvia
Macoma balthica
0
1 0
0
2
0.6
Macoma tenta
0
1 0
0
0
0.2
Mytilopsis leucophaeta
1
0 1
0
0
0.4
.•

Gastropoda
Littoridinops sp.
Nematoda
Nematoda sp.
17
0
36
0
9
0
16
0
28
1
Total taxa by sample 81 181 85 130 306
Total abundance = 783
Total taxa present = 27
Shannon -Wiener diversity = 2.35
EEO
21.2
0.2